Considering the human body hosts over 10,000 species of bacteria at any given time, there's no need to be a germaphobe. Most of those bacteria are good for you unless you get an open wound or infection. If a person truly thinks everything they touch is infected with something, then they would never touch themselves in any fashion!

All of those things are things that are part of your environment.The amazing thing is that we are still alive and healthy, despite all the incessant natural and unnatural assaults on our bodies, from things in the environment.That's some marvellous adaptive and self-repairing machine you've got there - your body.